Architecture History 89 Architecture, Modern 71 Conservation and restoration 71 City planning 61 Buildings, structures, etc 58 Historic buildings 53 Building 49 Bibliography 43 Designs and plans 43 Buildings 37 Periodicals 35 Architecture, Domestic 27 Details 26 Congresses 24 Guidebooks 24 Competitions 20 Environmental aspects 20 Art 19 Composition, proportion, etc 17 Description and travel 17 Architectural design 16 Study and teaching 16 Antiquities 14 Architects 13 Pictorial works 13 Human factors 12 Architecture, Colonial 11 Dictionaries 11 Handbooks, manuals, etc 11